Earthquake in Southwest Indian Ridge
Reported by USGS yesterday.
Another comparable one was recorded here earlier the same day.
What the source measured
USGS reported: Southwest Indian Ridge
Nearby, since 29 August 2026
- August 29, 2026 · score 16 · 8.0 km
- August 29, 2026 · score 16 · 8.0 km
- August 29, 2026 · score 17 · 12.5 km
How we know
Confirmed by 2 independent sources, including USGS.
Our own score for this event is 17 out of 100, at 68 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Earthquake |
| Severity | medium |
| Calamity Score (ours) | 17 / 100 |
| Our confidence | 68% |
| Coordinates | -31.8483, 56.9522 |
| Nearest City | Saint-Joseph (1171 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-29T05:40:06.207Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/us7000tcs7 |
Score Breakdown
Technical Details
| Mag | 5.1 |
| Depth | 10 |
| Tsunami | false |
| Sig | 400 |
| Emsc Mag | 5.1 |
| Emsc Depth | -16 |
| Emsc MagType | mb |
| Emsc Region | SOUTHWEST INDIAN RIDGE |
| Emsc Auth | EMSC |
| Emsc SourceId | 2052756 |
| MergedSources | [{"id":"emsc_20260829_0000071","source":"emsc","severity":"medium","severityValue":40.8,"timestamp":1787982007520,"latitude":-31.8768,"longitude":56.9983}] |
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a earthquake event with CalamityScore 17/100, in Southwest Indian Ridge, based on data from usgs. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.